Sony STR-DH550 / STR-DH750 Service Manual ▷ View online
STR-DH550/DH750
11
HISTORY MODE
The state that the set is used is memorized.
Procedure:
1. While pressing [TUNING MODE] and [DISPLAY] buttons si-
The state that the set is used is memorized.
Procedure:
1. While pressing [TUNING MODE] and [DISPLAY] buttons si-
multaneously, press the [
?/1
] button to turn on the power and
“HISTORY” is displayed.
2. Each time the [
M ] [ m ] key of remote commander is pressed,
the item is switched in order as follows.
Items
Display
Protector Count
C O U N T
x
x
x
Total
Power
ON
time
T x x x x x H x x M
Main
Power
On
M
x x x x x H x x M
Protector
type
P R O T x x x x
Sound Field
S N D
F I
E L
D
Function
F U N C T I O N
Input Mode
I
N P
M O D E
Digital
Select
D I G S E L E C T
Stream
S T R E A M I
N F O
Channel Config
C
O N F x x x x x
Headphone
H E A D P H x x x
Volume
V O L _ x x
Muting
M U T I N G _ x x
Bass
B
A
S
S
x
x
x
Treble
T
R
E
B
x
x
x
Front
Level
F x x x / x x x
Center
Level
C
x x x / x x x
Surround
Level
S x x x / x x x
Surround Back Level
(Only for STR-DH750)
(Only for STR-DH750)
B x x x / x x x
Front Height Level
(Only for STR-DH750)
(Only for STR-DH750)
H
x x x / x x x
Temperature
T
E
M
P
_
Total
Power
On
T x x x x x H x x M
Main
Power
On
M
x x x x x H x x M
Power On Count
R E B O X _
x
x
USB UPDATE TEST MODE
To update micontroller software through USB.
Procedure:
1. Plug in USB device in power off condition.
2. While pressing [TUNING MODE] and [PURE DIRECT]
To update micontroller software through USB.
Procedure:
1. Plug in USB device in power off condition.
2. While pressing [TUNING MODE] and [PURE DIRECT]
buttons simultaneously, press the [?/1] button to turn on the
main power.
main power.
3. The message “UPDATING” appears.
4. If the updating progress succeeds, the message “COMPLETE”
4. If the updating progress succeeds, the message “COMPLETE”
appears.
5. If the updating progress fails, the message “ERROR” appears.
USB UPDATE VERSION MODE
Function that displays the version number of all firmware to
check whether USB Update Test is necessary or not.
Procedure:
1. While pressing [TUNING MODE] and [DIMMER] buttons,
Function that displays the version number of all firmware to
check whether USB Update Test is necessary or not.
Procedure:
1. While pressing [TUNING MODE] and [DIMMER] buttons,
press the [?/1] button to turn on the main power.
2. The message “VER X.XXX” is displayed. “X.XXX” is
calculated by adding all fi rmware version.
Example:
(MCU ver. + VIDEO ver. + DSP ver. + OSD ver. + 6)/10 =
USB Update version
MCU = 1.01, VIDEO = 1.04, DSP = 1.02, OSD = 1.03
↓
(1.01 + 1.04 + 1.02 + 1.03 + 6)/10 = 1.010
1.010 = X.XXX
STR-DH550/DH750
12
FIX MODEL AND DESTINATION MODE
This mode is to fix the set for model & destination.
When turning on the set, the message below appears if the setting
is not fixed with its model or destination or both (model & destina-
tion).
This mode is to fix the set for model & destination.
When turning on the set, the message below appears if the setting
is not fixed with its model or destination or both (model & destina-
tion).
Items
Display
MODEL & AREA NOT
FIX
FIX
M D. D S T. U N F I X
MODEL NOT FIX
M O D E L. U N F I
X
AREA/DESTINATION
NOT FIX
NOT FIX
D E S T. U N F I X
Procedure:
1. Press the [?/1] button to turn on the main power.
2. While pressing [DISPLAY] button, press and release the
1. Press the [?/1] button to turn on the main power.
2. While pressing [DISPLAY] button, press and release the
[A.F.D./2CH], [MOVIE], [MUSIC] button in order, the
message “SPECIALIZE” appears.
message “SPECIALIZE” appears.
3. Press the [
M ] or [ m ] key of the remote commander, the
message “<SPECIAL>” appears.
4. Press the [
] key of the remote commander to enter the
Special Menu List.
5. Each time the [
M ] or [ m ] key of the remote commander is
pressed, the item is switched in order as follows.
Items
Display
MODEL
setting
M
O
D
E
L
DESTINATION setting D E S T I
N Y
MODEL &
DESTINATION check
DESTINATION check
M O D E L + D E S T
SYSTEM
VERSION
S Y S v X. X X X
MAIN VERSION
M A I
N
v X. X X
VIDEO VERSION
V I
D E O
v X. X X
OSD VERSION
O S D
v X. X X
DSP SFLASH1 VER
S F L A S H v X. X X
6. Go to MODEL setting and press the [
] key of remote
commander.
7. Either one of the message as below appears.
Items
Display
Model not fix
yet
M O D E L. U N F I X
Model STR-H55 fix
H 5 5 f i x
Model STR-H75 fix
H 7 5 f i x
8. Press the [
M ] or [ m ] key of remote commander to set model
info as “H55 fi x” or “H75 fi x” if message “MODEL UNFIX”
appears.
appears.
9. Press the [
] key of remote commander to select the model.
10. The message “MODEL” appears.
11. Go to DESTINATION setting and press the [
11. Go to DESTINATION setting and press the [
] key of
remote commander.
12. Either one of the display below appears according to the
destination of the set.
Items
Display
Destination
D E S T U N F I X
Destination UCA
fix
U
C
A
f i x
Destination J
fix
J
f i x
Destination TW/SA2 fix
T
W
f i x
Destination SP/CN fix
C
N
f i x
Destination KR
fix
K
R
f i x
Destination E2/E3 fix
C
H
3
f i x
Destination CEL
fix
C
E
L
f i x
Destination AU
fix
A
U
f i x
Destination E12
fix
E 1 2 f i x
Destination E51
fix
E 5 1 f i x
Destination BR
fix
B
R
f i x
Destination AR
fix
A
R
f i x
Destination MX
fix
M
X
f i x
13. Press the [
M ] or [ m ] key of remote commander to set
destination info if message “DEST UNFIX” appears.
14. Press the [
] key of remote commander to select the
destination.
15. The message “DESTINY” appear.
16. Go to MODEL & DESTINATION check and press the [
16. Go to MODEL & DESTINATION check and press the [
]
key of remote commander.
17. Either one of the message as below appears.
Items
Display
MODEL & AREA NOT FIX M D. D S T. U N F
I
X
MODEL NOT FIX
M O D E L. U N F
I
X
DESTINATION NOT FIX
D E S T.
U N F
I
X
STR-H55
H 5
5
x
x
x
STR-H75
H 7
5
x
x
x
xxx:
Area
display
18. Repeat step (6) onwards if message “MD.DST.UNFIX”
appears.
19. Repeat step (6) until step (10) and continue with step (16)
onwards if message “MODEL.UNFIX” appears.
20. Repeat step (13) onwards if message “DEST. UNFIX”
appears.
21. Set need to be reset and updated again if the message
appeared incorrectly.
22. Press the [
M ] or [ m ] key of remote commander goes to “MD.
DST.UNFIX”.
23. Press the [
] key of remote commander.
24. The set will power off and then power on by itself.
25. Start the setting again from step (1) onwards.
26. Perform SHIPMENT MODE if the message appears correctly.
27. The set will be power off itself and can be used as normal by
25. Start the setting again from step (1) onwards.
26. Perform SHIPMENT MODE if the message appears correctly.
27. The set will be power off itself and can be used as normal by
pressing [?/1] button.
Ver. 1.1
STR-DH550/DH750
13
FM AUTO STOP CHECK
Procedure:
1. Turn on the set.
2. Input the following signal from Signal Generator to FM
1. Turn on the set.
2. Input the following signal from Signal Generator to FM
antenna input directly.
* Carrier Frequency: A=87.5 MHz, B=98 MHz, C=108 MHz
Deviation
Deviation
: 75 kHz
Modulation : 1 kHz
ANT input
ANT input
: 35 dBu (EMF)
Note:
Use 75 ohm “coaxial cable” to connect SG and the set.
You cannot use video cable for checking.
Please use SG whose output impedance is 75 ohm.
3. Set to FM tuner function and scan the input FM signal with
automatic scanning.
4. Confi rm that input Frequency of A, B and C are detected and
automatic scanning stops.
The stop of automatic scanning means “The station signal is
received in good condition.”
received in good condition.”
SECTION 4
FM TUNER CHECK
generator
OUT (75
Ω)
set
MHL VBUS TEST MODE
To display MHL VBUS status
Procedure:
1. Press the [
To display MHL VBUS status
Procedure:
1. Press the [
?
/
1
] button to turn on the main power.
2. While pressing [DISPLAY] button, press and release the
[MUSIC], [MOVIE], [A.F.D./2CH] button in order, the
message “VBUS STAT” appears.
message “VBUS STAT” appears.
3. Press the [
] key of the remote commander to check the
items.
Items
Display
No Error
N O
E R O R
Current Limited
C U R
L
I
M
I
T D
Current Stopped
C U R
S T O P P D
STR-DH550/DH750
14
SECTION 5
DIAGRAMS
• Circuit Boards Location
STANDBY DCDC board
HDMI board
TUNER1 board
MAIN board
NFC ICON PC board (DH750)
RC-S801/A5 (WW)
(DH750)
(DH750)
POWER KEY board
HEADPHONE board
FRONT JACK board
DISPLAY board
BLUETOOTH MODULE
(DH750)
(DH750)
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